The utility model discloses a transformer coil tip compresses tightly instrument, including a plurality of piece compression screw s of two upper and lower closing device with two closing device of connection, closing device includes inner circle, outer lane and evenly distributed a plurality of blocks of steel sheets between inner circle and outer lane, and inner circle, outer lane and steel sheet lie in the coplanar, and steel sheet one end is connected with the inner circle, and the other end is connected with the outer lane, and every block of steel sheet has welded a steel pipe respectively in the junction that is close to inner circle and outer lane, perhaps offers a circular through -hole respectively. The utility model discloses can guarantee that end winding is compressed tightly more fully, messenger's coil atress is even, the terminal surface is level and smooth, has ensured coil technological requirement and finished product quality effectively. Simultaneously, workman easy operation is convenient, has improved the problem that compresses tightly the difficult adjustment in position, the difficult control of packing force, has improved work efficiency.